Machine for forming wire-work



(No Model.)

P. J. BRAND.

MACHINE FOR FORMING WIRE WORK.

Na. 274,557. Patented Mar. 27,1883.

rese ted on a larger scale.

UNITED STATES PATENT OFFICE.

FREDERICK J. BRAND, on authentic, CONNECTICUT.

MACHINE FOR FORMING WIRE-WORK.

SPECIFICATION forming part of. Letters Patent No. 274,557, dated March2'7, 1883.

Application filed September 27, 1882. (No model.)

To all whom it may concern Be it known that I, Fnnnnaror: J. BRAND, ofMilldale. in the county of Hartford and State of Connecticut, haveinvented certain new and useful Improvements in Machines for FormingWire-Work, of which the following is a specification.

My invention relates to improvements in machines for forming wire-workfor'parts of piano-actions and other work; in which ma chinesuitably-shaped pins are secured upon a small revolving table, incombination with guides and a gage and rack and pinion for revolvin gthe table, and either with or without a horizontally-inci ing slide bythe side of said table; and the objects of my improvements are to bendthe wires more economically than heretofore, and also to so bend themthat they shall all he alike. I attain these objects by the mechanismillustrated in the accompanying drawings, in which- Figure 1 is a planview of my machine. Fig. 2 is a plan view of a portion thereofirep- Fig.3 is a vertical section of said portion, partly in elevation, on line a:so of Fig. 2. Figs.4c and 5 are front and side elevations, respectively,of the wire-work as bent b my machine; and Fig. 6 is a front elevationof a portion of my machineviz., the bed B, the horizontally-moving slided, and the spring g, which returns said slide.

A. designates a revolving table, fitted in a suitable hearing orhearings in the bed B, and provided with a driving-pinion, (LFig. 3. Bythe side of the pinion 0 there is a slidingrack, D, which engages saidpinion for driving it, and whose motion in one direction is sufficientto carry the table A one full revolution. As shown in the drawings, thisrack is reciprocated by means of a hand-lever, E; but, if desired, itmay be driven by a mechanism similar to an ordinary power-press, soarranged that when the treadlc is depressed to start the machine it willcontinue until it has impartedonefullforward and backward movement tothe rack, and then stop, unless the treadle is held down.

In the table A, I afIiX two formingpins, a a, of the form shown. Infront of the table are two guide-pins, b b. and just over the rear edgeof the table the stop-gage 0. By the side of the table there is ahorizontally-moving slide, (1. This slide is forced forward-- that is,toward the tahle- -by contact with the lever E during the last part ofits throw. In case the rack should be driven by othcrmeans than thelever E, a wing or projection on the rack could be made to engage theslide (1 and move it, the same as does the lever.

The wires are first pointed and threaded in any proper manner. I thenplace the wires, one at a time, between the guide-pins b b andforming-pins (6 a, and with one end resting on the gage c, as shown inFig. 3, in which view it will be observed that the wire slants upward.The wire is thus placed in the machine when the rack is drawn to oneside, as shown in Fig. 1. The rack is then forced forward and back,bending the wire into the form illustrated in Figs. 4 and 5. The gage cprevents 7c the end of the wire from falling down, and so soon as 'thewire begins to wind around the forming-pi us it has a tendency to drawdown upon the table, so as to raise the opposite end of the wire,therebv forming the eye it snbstantially fiat, and in the same planewith the shank k or body of the wire, as shown, while the end 9 isinclined. Just as the table is about to complete a'fuil revolution thelever E acts upon the slide (1 to force itforward, when its end strikesthe wire and forms the bend a, Fig. 4. A spring, q, Fig. (3. (not shownin the other figures of the drawings, because it is of ordinaryconstruction, and because it is under the taiioi the slide.) causes theslide 61 to return to its normal position so soon as the lever retreats.At the end ot'the forward move ment of the rack the wire is taken offfrom the pins, after which the rack is returned to its normal position.0

l contemplate the use ot'an automatic picker or take-off to remove thewire immediately after it is formed and before the table has moved inits return or reverse direction enough to bend the wire. 5

I have herein shown but one set of guides, forming-pins, and gage forforming only one form of wire-work; but itis evident that when otherforms of analogous wire-work is desired it may be made upon the samemachine by ing the table, substantially as described, and V for thepurpose specified.

3. The combination of the revolving table, having forming-pins, the bedhaving guide and gage, the slide d, and mechanism for operating thetable and slide, substantially as described, and for the purposespecified.

' FREDERICK J. BRAND.

Witnesses:

JAMES SHEPARD, J OHN EDWARDS, Jr.

